Precision Quartz Glass Product Portfolio
Engineered to exact tolerances for optical, semiconductor, vacuum chamber, and high-temperature industrial applications in Finland.
Precision Flat-Cut Fused-Quartz Straight Process Tubes with 90-Degree Squared Ends for Vacuum CVD Chambers
High Purity Solid Optical Clear Fused Quartz Glass Rod for Light Guide Semiconductor
High Temperature Resistant Quartz Glass Circular Silica Custom Size Cutlery & Disc Blanks
4-Inch US Quartz Sand Fused Crucibles with Fire-Polished Rim for High-Temperature Semiconductor Ingot Melting
Heavy-Wall Fused-Quartz Cylindrical Pressure Tubes with Squared Ends for High-Pressure Autoclave Sight Glass
Clear Fused Silica Quartz Glass Plate & Circular Discs 0.5-100mm for Optical Semiconductor Industry
Standard 2-Window and 4-Window UV Quartz Cuvettes with Black Q Mark in Blue Foam Case
Small Bore Clear Fused Quartz Glass Tube with Flat Cut Unpolished Ends for Chromatography
99.99%
Purity SiO2 Grade
1100°C
Continuous Working Temp
λ 190-2500nm
Spectral Transmission Range
ISO 9001
Certified Quality Control
1. Material Physics & Optical Engineering Framework of Quartz Glass Discs
High-purity quartz glass discs (fused silica and fused quartz circular substrates) represent a foundational class of precision optical and thermal components. For industrial procurement teams, photonics researchers, and OEM equipment builders in Finland, specifying the appropriate grade of optical quartz disc requires a rigid technical evaluation of material chemistry, thermal expansion physics, dielectric properties, and spectral transmission curves.
Unlike standard borosilicate or soda-lime glass, fused quartz is manufactured by melting high-purity natural quartz crystals or synthetic chemical precursors ($\text{SiCl}_4$) at extreme temperatures exceeding $1700^\circ\text{C}$. This eliminates crystalline phase boundaries, creating a non-crystalline, vitreous structure with an extremely low coefficient of thermal expansion ($\approx 5.5 \times 10^{-7} / ^\circ\text{C}$). Consequently, quartz glass discs exhibit near-zero dimensional distortion when subjected to thermal shock—withstanding abrupt temperature swings from extreme cryogenic environments to over $1100^\circ\text{C}$.
Optical Transmission & Hydroxyl Level (OH⁻ Content) Standardizations
When selecting quartz glass discs for Finnish laser optics, spectrographs, or industrial viewports, material selection is categorized into three primary optical grades:
Synthetic Fused Silica (JGS1 / UV-Grade)
Synthesized via chemical vapor deposition. Free of metallic impurities, high OH⁻ content (800–1000 ppm). Delivers >90% transmission in Deep UV ($\lambda = 190\text{nm} - 2600\text{nm}$). Zero fluorescence under ultraviolet irradiation.
Natural Fused Quartz (JGS2 / Optical-Grade)
Melted from refined natural quartz crystal sand. Low OH⁻ content (<30 ppm). Provides excellent optical clarity from Visible to Near-Infrared ($\lambda = 220\text{nm} - 2500\text{nm}$). Ideal for process chamber viewports and sight glasses.
Infrared Grade Quartz (JGS3 / IR-Grade)
Produced via vacuum electric melting. Ultralow hydroxyl level ($\text{OH}^- < 5\text{ ppm}$). Completely eliminates the $2.73\mu\text{m}$ absorption band, maximizing performance across the mid-infrared spectrum up to $3.5\mu\text{m}$.
2. Localized Application Scenarios Across Finland's High-Tech Industries
As one of Northern Europe’s leading innovation hubs, Finland hosts world-class research institutes (such as VTT Technical Research Centre of Finland), advanced semiconductor facilities in Espoo and Vantaa, extensive forestry and paper-pulp automated processing lines, and clean transition technology developers. Precision quartz glass discs play a vital operational role across these distinct sectors.
Semiconductor & Microelectronics (Espoo / Vantaa Hubs)
In thin-film deposition (CVD, ALD), etching, and wafer baking, quartz discs serve as process chamber windows, thermal heat shields, and substrate carriers. Their extreme purity ($\text{SiO}_2 \ge 99.99\%$) prevents trace metallic ion contamination ($\text{Fe, Cu, Na}$) during high-temperature semiconductor processing.
Automated Process Monitoring in Paper & Pulp Mills
Finland's forestry and paper processing industries rely on non-contact optical inspection and spectroscopy. Heavy-wall fused quartz sight glass discs mounted on digestion boilers and chemical lines tolerate aggressive black liquor chemicals, sulfur compounds, and high mechanical pressure without clouding.
Laser Photonics & Quantum Research (VTT & Universities)
In ultra-fast laser systems and quantum optical setups, ground and double-side optically polished quartz discs act as laser output couplers, mirror substrates, and beam splitters. Flatness standards up to $\lambda/10$ and scratch-dig surface quality of 10-5 ensure zero laser beam distortion.
Sub-Zero Harsh Environment Outdoor Viewports
Industrial sensor networks and optical cameras deployed across Northern Finland require viewports that survive arctic ambient winter temperatures (down to $-40^\circ\text{C}$) while heated internally. Fused quartz discs eliminate cold-shattering risks inherent to standard soda-lime or tempered float glass.
3. Technical Specification Matrix: Fused Quartz Disc Parameters
To assist Finnish procurement officers and design engineers in choosing the precise quartz material specifications for RFQs and drawing submissions, the following baseline matrix contrasts typical engineering thresholds:
| Physical / Optical Property | JGS1 (Synthetic Fused Silica) | JGS2 (Natural Fused Quartz) | JGS3 (Infrared Grade Silica) |
|---|---|---|---|
| Primary Material Origin | Chemical CVD ($\text{SiCl}_4$) | Purified Donghai Quartz Sand | Vacuum Electric Melted Sand |
| SiO2 Purity Level | > 99.999% | > 99.99% | > 99.99% |
| Hydroxyl ($\text{OH}^-$) Content | 800 – 1000 ppm | < 30 ppm | < 5 ppm |
| Spectral Transmission Range | 190 nm – 2600 nm | 220 nm – 2500 nm | 260 nm – 3500 nm |
| Continuous Operating Temp | 1100 °C | 1100 °C | 1200 °C |
| Max Thermal Shock ($\Delta T$) | 1000 °C Water Quench | 1000 °C Water Quench | 1100 °C Water Quench |
| Surface Parallelism Options | Up to < 5 arcsec | Up to < 10 arcsec | Up to < 10 arcsec |
| Standard Polish Quality | 20/10 or 10/5 Scratch/Dig | 60/40 or 40/20 Scratch/Dig | 40/20 Scratch/Dig |
* Note: Custom specs including chamfered edges, stepped optical discs, drilled hole cutouts, and AR optical coatings (Anti-Reflective) are customized to drawing.
4. Sourcing Dynamics & Technology Trends in the Finnish Market
Sourcing precision glass components into Finland has shifted rapidly toward streamlined, direct-factory partnerships. Key market drivers reshaping quartz disc procurement across Nordic countries include:
- Expansion of Clean-Tech & Battery Cell R&D: Finland’s battery strategy and clean transition initiatives demand high-temperature, acid-resistant quartz vessels, plates, and viewports for chemical synthesis and thermal analysis.
- Accelerated Micro-LED & Quantum Hardware Development: High-density photonics setups in Southern Finland require custom synthetic quartz disc wafers featuring sub-nanometer surface roughness ($\text{Ra} < 0.5\text{nm}$) for deep UV lithography and optical trapping.
- Stringent EU Compliance Directives: Finnish buyers require full compliance with EU REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) and RoHS regulations. Raw materials must be fully traceable and certified free of hazardous heavy metals.
- Direct Manufacturer Supply Chain Resilience: Bypassing intermediary traders in Western Europe allows Finnish engineering companies to shorten lead times, lower unit costs by up to 35%, and communicate directly with factory glassblowing engineers for custom OEM fabrication.
5. Enterprise Advantages & Donghai Kemzo Quartz Manufacturing Capabilities
Donghai Kemzo Quartz Products Co., Ltd., based in Donghai County, Lianyungang, Jiangsu—widely recognized as China's crystal capital—combines decades of raw material mastery with advanced optical CNC processing capabilities. As a integrated manufacturer and exporter serving global markets since 2011, we deliver direct engineering value to Finnish partners.
Source-Region Raw Material Purity
Direct proximity to Donghai’s high-purity natural silica reserves allows us to select premium grade quartz sand ($\text{SiO}_2 \ge 99.99\%$). This guarantees low bubble density, minimal inclusions, and structural stability across every production run.
ISO 9001 Certified Machining & Polishing
Our plant operates under ISO 9001 quality management standards. Facilities include multi-axis CNC glass grinding machines, double-sided optical polishing lines, precision laser cutting, surface profilometers, and spectrophotometers.
Custom Engineering to Drawing (OEM/ODM)
We work directly with client CAD files (.STEP, .DWG, .DXF, .PDF). Whether you require micro-discs ($\emptyset 5\text{mm}$) for specialized sensors or heavy-duty discs ($\emptyset 500\text{mm}$) for industrial sight glasses, our team confirms tight tolerances before fabrication.
Export Packaging & Air Freight to Finland
Fragile optical quartz components are vacuum-sealed, encased in shock-absorbing custom foam, and protected by reinforced export wooden cases. We provide seamless door-to-door (DDP/DDU) air freight delivery straight to Helsinki, Tampere, Oulu, or Turku.
6. Frequently Asked Questions (FAQ) for Finnish Procurement Teams
Ready to Source High-Purity Quartz Glass Discs for Your Finnish Operations?
Send us your specifications, required tolerances, or CAD drawings today. Our engineering team provides detailed technical feedback and competitive direct-factory quotations within 1 hour.
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